Jeep 5184296AE Rocker Arm Kit

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Major disassembly of the engine and surrounding components by removing the timing chains and camshaft is an option but a universal shaft-type valve spring compressor is used in this procedure instead. Start by selecting Park or engaging the parking brake or chocking the drive wheels and immobilizing the ignition by removing the leads from the ignition coils and removing spark plugs. Third, one should take out the upper intake manifold and the valve cover(s). Turn the engine with a socket and ratchet that is fitted at the crankshaft pulley bolt until a specific cam lobe of the rocker arm to be removed is situated at its base circle with an anti-clock wise turning of the crankshaft. In case of removal of rocker arms and lash adjusters, it is very important to label and place them where they can easily be fixed back into place. Take the valve spring compressor and put it over the cylinder head and only compress the spring enough to allow, you release tension on the rocker arm and pulling the arm out. To replace or remove all rocker arms or lash adjusters, begin at cylinder number one, memorizing your sequence by working on one cylinder at a time, also since the firing order is sequential, harmonize the rocker arm and lash adjuster for each valve. When the rocker arms have been pulled out, the direction of the lash adjusters can be pulled out of the cylinder head and placed with the related rocker arm. Examine each rocker arm for wear, cracks and other defects, including in particular the movement of the rollers, and the state of the pivot point. Moreover, check the lead-in end of the lash adjuster contact surfaces for wear and or damage and ensure that the lash adjuster moves smoothly in its bore with no heavy side way movement. Installation is the converse of removal, though one additional rule should apply: the lash adjuster should be full of oil when installed, preferably to the extent that there should be very little or no travel outward on the reflux plunger.

To do this one has to slot the pushrod retainer special tool #9070 on the pushrods then bolt and tighten the tool mounting bolts. Un Tighten the rocker arm shaft bolts, from the middle then loosen the rocker shaft till you can lift it off the cylinder head, the heads of the rocker arm assembly are marked to indicate that the upper are intakes and the lower exhausts. Since the tangs may fall into the engine if removed, it is necessary not to take out the retainers from the rocker shaft assemblies. Make sure of the positions of the rocker arms in order to align them for reassembly, and store every set of rocker parts properly. Now, one by one undo the pushrod retainer tool fasteners and take out the pushrods, while pulling back the trolley as required in order not to mix the exhaust pushrods with the intake ones, as the former are slightly longer than the latter and, therefore, are not interchangeable. Where the cylinder heads have been removed and milled to ensure flatness, ensure to replace the correct length of pushrods to match the dimension of the decrease distances for the rocker arms to the camshaft. Examining each rocker arm on wear, cracks, and other damages, at the contact points with the pushrods and the valve stems, as well as the rocker arm shafts and bores for wears, and replace the worn or damaged one. Assure that there is an open hole at the pushrod end of each rocker arm and if possible look for cracks on the push rods, and excessive wear, roll each of the push rods across a piece of plate glass. Coat the lower end of each pushrod using clean engine oil or assembly lube and then replace these in their original spots; make sure it settles correctly and firmly within the lifter socket. Use engine assembly lube on the ends of the valve stems and at the upper end of the push rods in view of the initial starting period. Following the realignment of the pushrods, fix the pushrod retainer nuts as tightly as possible. Coat the rocker shafts with clean engine oil or assembly lube, then fit the rocker shafts with all parts as they have been before and then put them back on the cylinder heads. Tighten the rocker arm shafts firstly on the centre bolt and in sequence on opposite ends until the right torque is attained to sit the pushrods correctly in the rocker arms. If the rocker arm bolts tighten further before the shaft settles or if the push rods stick, one should not carry on tightening as this will only aggravate the problem; he or she should remove the rocker arm and then examine the rocker arm shafts and other components closely. Last, remove the pushrod retainer and the special tool, replace the valve covers and start the engine, preliminary checking for the strong valve train squealing and the oil leakage on the valve cover gaskets.

Rotate the engine with a socket and ratchet attached to the crankshaft pulley bolt until the cam lobe for the rocker arm to be removed is positioned on its base circle, turning the crankshaft in a clockwise direction.

Extract the dowel pins using a 4 mm screw, nut, washer, and spacer, and remember to use new dowel pins during installation.

Loosen each rocker arm shaft bolt gradually in reverse order of the tightening sequence until they can be removed by hand, taking out the shaft and rockers as an assembly.

Keep the rocker arm assemblies in an upright position and avoid placing them on the lash adjusters when on the bench to prevent damage.

Installation is the reverse of removal, with the exception that the lash adjuster should always be installed first, ensuring they are at least partially full of oil, indicated by little or no lash adjuster plunger travel.

Install the rocker arms on the shaft and lower the assembly onto the cylinder head, tightening the bolts gradually from the center outward to the specified torque, ensuring proper engagement of the pushrods in the rocker arms.

Inspect the bearing journals and caps for wear, replacing parts as necessary, and check cam lobes for wear, ensuring to investigate the cause of any wear before replacing the camshaft.

Disconnect the cables from the negative terminals of the batteries.

A special valve spring compressor is required.

Once fully loosened, lift the rocker shaft assembly off the cylinder head, ensuring the retainers under the bolt heads remain in place.